Impedance spectroscopy and electro-optic switching times of a liquid crystal hydroxypropyl cellulose network composite

D. Mănăilă Maximean; A. Bărar; C. P. Ganea; P. L. Almeida; O. Dănilă

doi:10.1117/12.2326224

31 December 2018 Impedance spectroscopy and electro-optic switching times of a liquid crystal hydroxypropyl cellulose network composite

D. Mănăilă Maximean, A. Bărar, C. P. Ganea, P. L. Almeida, O. Dănilă

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Proceedings Volume 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX; 109770P (2018) https://doi.org/10.1117/12.2326224
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies IX, 2018, Constanta, Romania

Abstract

This paper presents electric and electro-optic studies conducted on a new composite, namely hydroxypropylcellulose network with liquid crystal fillings. The composite was manufactured using the electrospinning method, and deposited on indium tin oxide glass. In terms of electric characterization, the samples were subjected to impedance spectroscopy, their equivalent circuit model was deduced, and the corresponding electric parameters were computed based on the Cole-Cole diagrams and frequency plots of the two impedance components. In terms of electro-optic studies, the optical transmission of the sample under a varying steady-state alternative regime voltage was recorded, and the saturation threshold field was determined. Also, the switching times of the sample with respect to a step signal were determined.

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D. Mănăilă Maximean, A. Bărar, C. P. Ganea, P. L. Almeida, and O. Dănilă "Impedance spectroscopy and electro-optic switching times of a liquid crystal hydroxypropyl cellulose network composite", Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX, 109770P (31 December 2018); https://doi.org/10.1117/12.2326224

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KEYWORDS

Liquid crystals

Composites

Electro optics

Dielectric spectroscopy

Switching

Glasses

Transmittance

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